Pump.



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Patented May 13 7f3/@MHS ./frffsa/v Jams/50N,

T. J. JOHNSON.

PUMP.

APPLICATION FILED 00T. 2B, 1910.

COLUMBIA PLANOGRAPH CO..WASMIN1TON. D. cA

5555551551 yaflV/lllf ../ll l THOMAS JEFFERSON JOHNSON, OF NORMAN,OKLAHOMA.

PUMP.

To all whom t may concern Be it known that I, THOMAS J. JOHNSON, acitizen of the United States, and a resident of Norman, in the count-yot' Cleveland and State of Oklahoma, have invented eertain new anduseful Improvements in Pumps, ot' which the following is a full, clear,and exact description.

My invention is an improvement in pumps, and consists of certain novelconstructions, and combinations o1 parts, hereinafter described andclaimed.

The invention aims to provide in a pump two pump factors which are putapproxi- Inately in counterbalance one with the other, whereby operationof one of the factors serves to assist the operation o1' the other inelevating the column of water, and vice versa.

Referring to the drawings: Figure l is an elevation View otl theimproved pump, partly in section, Fig'. 2 is an elevation view oit thepump taken at right angles to Fig. 1, or in the direction of the arrow Aof said igure, and, Fig. 3 is a side view ot' another embodiment of theinvention.

As best shown in Fig. 1, the improved pump consists of two separate andidentical pumping mechanisms, one of which is on the right-hand side ofthe line B-B, and the other on the left-hand side, a casing 3, crankshaft 4, and an upper shaft 5 being common to both mechanisms. Thecrankshaft il. is journaled in bearings G, and is .termed centrally intotwo diametrically opposed cranks 7, one `crank being adapted to move theparts of one mechanism and the other crank the parts of the othermechanism.

Since the two machines are identical in the matter of their separateparts, it is only necessary to describe one ot' them in detail. Eachmechanism consists, in part, of a tubular incasement 8, which extendsdownward from the main casing 3, this incasement being open at its lowerend and communicating with said casing at its upper end.

The main casing 3 is provided with an outlet elbow 9, from which pipeconnections may lead to any point of delivery for the water. Theincasement 3 is fitted with an elongated piston 10, hereinafter referredto as the main piston, and this piston has at its lower end a valvedopening 11. A tubular piston rod 12 extends from the spanning yoke 13 ofthis piston 10 up through and above the main casing 3, said piston rodbe- Speeification of Letters Patent.

Application filed. October 28, 1910.

Patented May 13, 1913. Serial No. 589,569.

ing provided with a proper stutling box 14, where it passes through theoutlet elbow 9. The main piston 10 is provided inwardly with a smallerpiston l5, which has in its bottom a valved opening 16, and this pistonhas a piston rod 17, extending from its spanning yoke 18, upwardlyslidably through the tubular piston rod 12. The upper end of the smallerpiston rod 17 is provided with a coupling head 19, and this couplinghead is operatively connected with the crank 7 by a connecting rod 20. Asprocket wheel 21 is mounted loosely on the upper' shaft 5, and thiswheel is integral through a hub connection 22 with a smaller sprocketwheel 23, so that both said wheels move in concert. A sprocket chain 2ahas one of its ends attached to the coupling head 19 of the small pistonrod 17,I said chain being passed over the larger wheel 21; downward fromsaid wheel 21 and around a pulley 25 in the top of a counter-weight 26;upwardly from said pulley 25 and over the smaller wheel 23; and downwardfrom said smaller wheel to a coupling head 27 on the upper end of thetubular piston rod 12, to which it is attached. It will now be seen thatif either o1 the piston rods 12 and 17 is raised upward it will allowthe counter-weight 2G to move downward, thereby causing both wheels 2land 23 to be revolved by the chain 2Liand causing the other piston rodto be raised upward. Since the wheel 2l above the piston rod 17 islarger t-han the wheel 23 above the piston rod 12, and since both wheelsare integral and move together as above stated, the smaller piston rod1.7 will move vfarther than the other7 the traveling speed oi. saidpiston rod 17 bears the same prolliortion of the speed of the piston rod12 as does the diameter of the larger wheel 21 to the diameter of thesmaller wheel 23. Since the difference in diameters o1 the wheels 2l and23 give them diitt'erent peripheral speeds, the pulley 25 in thecounter-weight 2G is made necessary in order that said counter-weightmay be supported equally by or act on both portions of the chain 241; atall times.

In operation, the shaft 4t is turned by a crank 2S, thus causing theconnecting rod 20 ot.' the crank 7 to move the smaller piston rod 17upward and downward, and thus causing the tubular piston rod l2 to alsobe moved upvard and downward, by th action of parts just described. Thiscau.c the main piston 10 to be reciprocated `10 and 15 the water issupported by the lower or main piston 10 and is let back into theincasement 8 by the downward movement of said piston a part of thedistance that it was raised by the smaller or inner piston 15, saidinner piston moving downward in said main piston as the water supportedby the latter passes up through the valved opening 16 of said innerpiston. This downward movement of the pistons 10 and 15 brings them tothe lower end of. their stroke, into the same position as the pistons ofthe opposite pumping mechanism on the left-hand side of the line B B.Since the two pumping mechanisms are operated by diametrically opposedcranks 7 of the shaft i 4 they will alternate with each other in action,so that the water delivered into and through the main casing 3 by themwill move in practically a continuous flow, though the movement ofneither pumping mechanism has any influence over the other.

Within the meaning and intent of the invention, one pumping mechanismmay be employed, and the incasement for the two pumps may be dispensedwith. In this event this main piston 10 would be continued upward as adelivery pipe for thewater, and it would still be given its verticalreciprocating movement with the counter-balancing Y weight 26.

The two counterweights on one o-f the double pulleys in Fig. 1, can beomitted by substituting one of the pumps as a counterbalance weight forthe other pump, and hanging the cylinders of the two pumps connectedlyover the smaller wheel of the remaining double pulley, and their pistonsconnectedly over the larger wheel of this pulley. Then, if the two pumpsbe oscilv lated, each will serve for power to help lift and operate theother.

In the embodiment shown in Fig. 3, a single one of the pumps in Fig. 1is shown .with the. incasement, and the other pump omitted.

The cylinder 30 is provided with a valve 31 in its bottom adapted to beopened by the upward movement of the water into the cylinder. A piston32 is arranged in the cylinder, and is provided with a valve 33, alsoadapted to be opened by the upward movement of the water. The cylinderis provided with a piston rod 34 extending upwardly therefrom, and therod 35 of the piston passes through the rod 34. Each of the* rods 34 and35 is provided at its upper end with a lateral lug 36 and 37,respectively, and the ends of a chain 38 are connected with therespective lugs. The central portion of the chain passes over the doublepulleys 39 and 40, and the said central portion Iis engaged by a pulley41 on the oppo-site side of the pulleys 39, 40, from the cylinders andpiston. A weight 42 is connected with the pulley 41.

It will be readily seen that when the pulleys 39, 40, are oscillated, adifferential movement will be imparted to the cylinder :and piston tooperate the pump, and a counter balance weight 42 serves for power tohelp in this operation. Also, if a second pump be substituted for thecounter balance weight, with the two pump cylinders connectedlysupported by the smaller pulley wheel, and the two pistons connectedlysupported by the larger wheel, then by oscillat-l ing the pulley 39, 40,each pump will serve for power to help counter-lift the other, andthereby operate the two.

It will be noticed that in all of the con- Y structions, the pistonshave relative movement with respect to each other, when the actuatingmechanism is in operation. When for instance, the shaft 4 is rotated inthe construction of Fig. 1, as the pistons move downward they approacheach other and as they move upward they recede from each other. Eachpair of pistons is balanced by the counterweight 26 and in addition onepump, that is, one cylinder and its pistons and its counterweight,counterbalances the other pump. For this reason, but little power isrequired to operate the device. 1When one pair of pistons move downward,the movement of the pistons is assisted by gravity and also by theweight of water above them, and by the suction below them. They thusassist to move the other pistons upward.

The foregoing being a full, clear, and eX- act description of theinvention, what I claim and desire to secure by Letters Patent is 1. Adevice of the class described, comprising a plurality of cylinders, acommon outlet at the top of the cylinders, a pair of pistons in eachcylinder, a double pulley arranged above each cylinder, one of themembers of each pulley being of greater diameter than the other, acommon shaft upon which both pulleys are journaled, a piston rodconnected with each piston, the rod of the lowermost piston being hollowand the rod of the upper-most piston passing through the hollow rod, aflexible connection for each pulley, said connection having one endsecured cent cylinder, said connection passing over the members of thedouble pulley, a counterweight on the other side of the shaft from eachcylinder', a pulley on each counter- Weight engaging the central portionof the adjacent flexible connection, a crank shaft provided with twocranks, and a link connecting each crank with the piston rod of theupper-most piston of the adjacent cylinder.

2. A device of the class described, comprising a pump incasement orcylinder provided With an outlet, a pair of pistons in said incasement,an auxiliary incasement having a wat-er connection with the firstincasement, a pair of pistons in the auxiliary incasement, a doublepulley arranged above each incasement, one member of' said double pulleybeing of greater diameter than the other, a fiexible connection for eachincasement, one end of the connection being connected with each piston,said connection passing over the respective members of the double pulleyadjacent the incasement, and a counterbalanee connected with theconnection on the opposite side of the double pulley from theincasement.

3. In a device of the class described, a pump incasement or cylinder,upper and lower pistons in the incasement, a double pulley comprisingmembers of' unequal diameter, a flexible connection having one endconnected with each piston and passing over the respective members ofthe double pulley, and a counterweight movable on the said v flexibleconnection on the opposite side of the double pulley from theincasement.

4. In a device of the class described, a pulley, a counterbalancingweight, a pump incasement or cylinder, upper and lower pistons in theincasement and connectedly supported over the pulley by thecounterbalancing weight, and means for imparting to the pistons an upand down reciprocable movement.

5. In a device of the class described, a pair of pump incasements orcylinders, a pair of pistons in each cylinder, a double pulley arrangedabove each incasement, one of the members of said double pulley being oflesser diameter than the other, and a connection between the respectivepistons of each incasement, the connections passing over the members ofthe pulley, and means connected with one of the connections of each pumpfor operating them.

6. In a device ofthe class described, a pair of pump incasements orcylinders, a pair of pistons in each cylinder a double pulley arrangedabove the cylinders, one of the members thereof being of lesser diameterthan the other, and a connection between the respective pistons of eachincasement, the connections passing over the members of the pulley andmeans for moving the pistons.

7. In a device ofthe class described, a pair of pump incasements orcylinders, a pair of pistons in each incasemcnt, a double pulleyarranged above the cylinder, one of the members of said double pulleybeing of lesser diameter than the other, and a connection between therespective pistons or' each cylinder, the connections passing over thetwo members ozt' the pulley.

8. In a pump, the combination with a cylinder, and upper and lowerpistons working in the cylinder, o't a double pulley comprising membersof unequal diameter, a flexible connection having one end connected witheach piston and passing over the respective members ot' the doublepulley, and means operatively connected therewith and ar- 'anged tocounterbalance the said pistons.

9. In a pump, the combination with a pair of cylinders, and a pair ofpistons in each cylinder, of a double pulley mounted above thecylinders, one of the members of the double pulley being of lessdiameter than the other, and means for imparting reciprocatory movementin opposite directions simultaneously to the corresponding pistons ofthe two pairs, said means including a flexible motion-transmittingelement having different portions of its length passing over the membersof the double pulley, whereby the pistons of each set will havedifferential reciprocatory movement with relation to each other.

THOMAS JEFFERSON JOHNSON. lVitnesses WV. F. GRAY, E. E. FoRnMAN.

Copies of this patent may be obtained for ve cents each, by addressing'the Commissioner of Patents. Washington, D. G.

